"Since we wear turban and beard, 99% of Americans think we belong to Bin Laden. They come to our store, tell us we are terrorists and ask us to go back to our country," Latwinder Singh said.

A man from Phoenix has been charged with his murder but police said it was too early to tell whether the shooting was racially-motivated.

Muslim vigil

American Muslims, however, have been alarmed by the rise in reports of physical or verbal abuse directed against members of their community.

There have been several incidents in Texas and Virginia of shots fired at mosques and Arab-owned shops and Muslim associations across the country have received threatening phone calls.

Over 1,000 Americans of Arab, African and Pakistani origin marched through New York on Sunday to show their support for the US and their rejection of terrorism.

"We are here to express our sorrow. We mourn the innocent victims of New York and as American citizens we are outraged by these terrorist acts," said Bassam Amine, a chemist and director of Brooklyn's Muslim school.

Marchers carried banners bearing the slogans: "Terrorism isn't Islam", "Love and peace to New York" and - in response to President Bush's declaration of war on terrorists and countries accused of harbouring them - "Another war is not the answer".